Automatic spot welding machine for battery

Abstract

The invention relates to the technical field of battery processing, and discloses an automatic spot welding machine for batteries, which comprises a working table, a feeding mechanism is mounted at the top of the working table, a rotating mechanism is mounted at the top of the working table, the rotating mechanism is mounted right in front of the feeding mechanism, and an adsorption feeding mechanism is mounted at the top of the working table. According to the automatic battery spot welding machine, automatic discharging of the feeding mechanism is achieved, a first air cylinder is matched to push batteries to enter the rotating mechanism to be overturned and arranged, then the adsorption feeding mechanism is used for automatically adsorbing the arranged batteries and moving the batteries to the position over the feeding spot welding mechanism, and a spot welding needle is used for spot welding of nickel strips to poles of the batteries; and meanwhile, the blade cuts off the nickel strap at a specified position, and finally, the adsorption feeding mechanism conveys the spot-welded batteries to the discharging conveying belt and conveys the spot-welded batteries to the next process through the discharging conveying belt, so that full-automatic production is realized, manual intervention is not needed, the spot welding quality is the same, and the production efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, and in particular to an automatic spot welding machine for batteries. Background Technology

[0002] The rapid development of the global new energy industry, particularly in applications such as new energy vehicles, grid energy storage, and lightweight consumer electronics, is driving battery demand and placing higher demands on battery performance. Currently, cylindrical and prismatic batteries are the mainstream in the market, but their assembly efficiency and welding quality have become crucial for industry development. Efficient assembly is a prerequisite for ensuring production capacity, while welding is key to determining battery safety and performance.

[0003] In battery production, the spot welding process between the tabs and the nickel strip is crucial. The quality of the weld directly determines the battery's conductivity and structural stability. Excessive weld resistance generates excess heat during charging and discharging, reducing energy efficiency; incomplete welds or detachments can lead to localized battery failure or even serious safety incidents such as thermal runaway. Furthermore, the consistency of the welds directly affects the current balance between the individual cells, thus determining the overall battery pack's lifespan and maintenance costs.

[0004] However, many production lines in the industry still use traditional spot welding processes, either operated by workers using hand-held welding torches or with semi-automatic equipment and manual loading and unloading. The efficiency and quality of manual operation are greatly affected by subjective factors such as worker skill and fatigue, resulting in slow speed and difficulty in ensuring batch-to-batch consistency. While semi-automatic equipment offers improvements, it still requires manual assistance and lacks flexibility, often leading to defects such as over-melting and incomplete welding, causing fluctuations in yield. Neither of these methods can meet the high-efficiency and stable requirements of large-scale industrial production. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic spot welding machine for batteries, which solves the problem that the efficiency and quality of manual operation are greatly affected by subjective factors such as worker skill and fatigue. This results in slow speeds and difficulty in ensuring batch-to-batch consistency. While semi-automatic equipment offers some improvement, it still requires manual assistance and lacks flexibility, often leading to defects such as over-melting and incomplete welding, causing fluctuations in yield.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic spot welding machine for batteries, comprising a worktable, a feeding mechanism mounted on the top of the worktable, a rotating mechanism mounted on the top of the worktable and positioned directly in front of the feeding mechanism, an adsorption feeding mechanism mounted on the top of the worktable, a feeding spot welding mechanism mounted on the top of the worktable, a grinding mechanism mounted in the middle of the feeding spot welding mechanism, a discharge conveyor belt mounted on the top of the worktable and positioned at the output end of the feeding spot welding mechanism, and a purification mechanism mounted inside the worktable for purifying the fumes generated during spot welding and removing sparks that fly during spot welding; The rotating mechanism includes a second cylinder, a second drive motor, and a material tray. The second cylinder is fixedly connected to the top of the worktable, the second drive motor is fixedly connected to the inside of the worktable, and a magnetic rotating platform is fixedly connected to the output end of the second drive motor. The material tray is fixedly connected to the top of the worktable, wherein the second cylinder and the material tray are respectively installed on the left and right sides of the magnetic rotating platform.

[0007] The above technical solution uses a rotating mechanism combined with magnetic attraction to stably hold the battery, then automatically flips it and pushes it to the tray for equidistant arrangement, automatically arranging the battery terminals in the specified direction, which facilitates the subsequent spot welding process without manual intervention, thereby improving production efficiency.

[0008] Preferably, the feeding mechanism includes a feeding conveyor belt and a hopper. The feeding conveyor belt is fixedly connected to the top of the workbench. A first cylinder is installed on the rear side of the feeding conveyor belt. The hopper is fixedly connected to the top of the workbench. A first drive motor is installed on the lower side of the hopper. A discharge wheel is fixedly connected to the output end of the first drive motor. The discharge wheel is installed directly above the feeding conveyor belt. The first cylinder is installed directly behind the magnetic rotary table.

[0009] The above technical solution involves placing batteries into the hopper according to the uniform orientation of their poles. With the rotation of the unloading wheel, the batteries are sequentially placed onto the feeding conveyor belt. The first cylinder then automatically pushes the batteries onto the magnetic rotating platform according to a specified program, allowing them to be attracted and held in place, thus facilitating their flipping.

[0010] Preferably, the adsorption feeding mechanism includes a lead screw motor slide rail, which is fixedly connected to the top of the workbench. A movable plate is installed on the front side of the lead screw motor slide rail, and a fixed plate is installed on the front side of the movable plate. A third cylinder is fixedly connected to the inner side of the fixed plate, and a suction trough is fixedly connected to the output end of the third cylinder.

[0011] The above technical solution uses a suction trough to hold the batteries stacked on the tray by negative pressure and move them directly above the feeding and spot welding mechanism for spot welding. Finally, the spot-welded batteries are automatically placed onto the unloading conveyor belt and moved to the next process.

[0012] Preferably, the feeding and spot welding mechanism includes two nickel strip reels, a spot welding station, and two support plates. The bottom of the nickel strip reels is rotatably connected to the top of the workbench, the bottom of the spot welding station is fixedly connected to the top of the workbench, and the bottom of the support plates is fixedly connected to the top of the workbench. The two support plates are respectively installed on the front and rear sides of the spot welding station. A first guide plate is fixedly connected to the top of the support plate, a second guide plate is fixedly connected to the top of the support plate, a fourth cylinder is fixedly connected to the top of the support plate, a pressure roller is fixedly connected to the output end of the fourth cylinder, a third drive motor is installed at the bottom of the support plate, a feeding roller is fixedly connected to the output end of the third drive motor, the pressure roller and the feeding roller are installed between adjacent sides of the first guide plate and the second guide plate, a cutting assembly is installed on the top of the support plate, and a spot welding assembly is installed on the top of the support plate.

[0013] Through the above technical solution, the nickel strip is moved to the right along the direction of the first guide plate and the second guide plate by the action of the pressure roller and the feeding roller.

[0014] The cutting assembly includes a fifth cylinder, the bottom of which is fixedly connected to the top of the support plate. A slider is fixedly connected to the output end of the fifth cylinder, and an adjusting block is fixedly connected to the right side of the slider. A blade is fixedly connected inside the adjusting block.

[0015] The above technical solution enables automated production and processing by moving a slider back and forth and using a blade to cut the nickel strip at a set position.

[0016] The spot welding assembly includes a sixth cylinder, which is fixedly connected to the top of the support plate. A spot welding generator is fixedly connected to the output end of the sixth cylinder. A support frame is slidably connected to the right side of the spot welding generator. The bottom of the support frame is fixedly connected to the top of the workbench. A spot welding needle is fixedly connected inside the spot welding generator.

[0017] The above technical solution uses a spot welding generator to drive the spot welding needle to move back and forth, spot welding the nickel strip to the battery poles, ensuring that the quality of each weld is the same.

[0018] Preferably, the bottom of the slider is slidably connected to the top of the support plate, and the bottom of the spot welding generator is slidably connected to the top of the support plate.

[0019] The above technical solution ensures the stability of the slider and spot welding generator, preventing them from moving erratically.

[0020] Preferably, the grinding mechanism includes a mounting base, the bottom of which is fixedly connected to the top of the worktable, a servo motor fixedly connected to the top of the mounting base, a turntable fixedly connected to the output end of the servo motor, an eccentric shaft fixedly connected to the right side of the turntable, a sliding plate slidably connected to the outside of the eccentric shaft, two sliding rods slidably connected inside the sliding plate, two sliding shells fixedly connected to the top of the sliding plate, the sliding shells slidably connected to the inside of the support plate, a grinding block interference fits inside the sliding shell, and the grinding block slidably connected to the outside of the spot welding needle.

[0021] The above technical solution uses a grinding block to periodically grind the end of the spot welding needle, keeping the end of the spot welding needle flat at all times. This reduces the probability of sparks appearing during spot welding due to uneven ends, thus affecting production safety.

[0022] Preferably, one end of the slide rod is fixedly connected to the top of the workbench, and the other end of the slide rod is fixedly connected to the bottom of the spot welding station.

[0023] The above technical solution keeps the slide bar stable, thereby restricting the direction of movement of the skateboard and making the skateboard move only in a straight line up and down.

[0024] Preferably, the purification mechanism includes a sealed box, the sealed box is fixedly connected to the outside of the workbench, a fan is fixedly connected to the right side of the sealed box, a water tank is slidably connected inside the sealed box, a limit rod is fixedly connected to the bottom wall of the sealed box, the right side of the water tank is slidably connected to the left side of the limit rod, a hose is fixedly connected inside the sealed box, a branch pipe is fixedly connected to the top of the hose, and two air intakes are fixedly connected to the top of the branch pipe. The lower side of the hose is fitted inside the water tank, and the outside of the fan extends through the right side of the workbench; The bifurcated tube extends through the workbench and the support plate.

[0025] The above technical solution uses a fan to generate suction, which draws away the fumes and sparks generated during spot welding. The bottom of the hose is submerged in water, allowing the fumes to fully contact the water and the purified water to be discharged, thus preventing air pollution.

[0026] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention utilizes an automatic feeding mechanism to unload batteries, which are then pushed into a rotating mechanism by a first cylinder for flipping and arranging. A suction feeding mechanism automatically absorbs the arranged batteries and moves them directly above a spot welding mechanism. Spot welding needles are used to spot weld nickel strips to the battery terminals, while a blade cuts the nickel strips at a designated location. Finally, the suction feeding mechanism transports the spot-welded batteries to an unloading conveyor belt, which then transports them to the next process. This achieves fully automated production without manual intervention, ensuring consistent spot welding quality and effectively improving production efficiency.

[0027] 2. This invention uses a servo motor to drive a turntable to rotate. Under the limit of the slide rod, the eccentric shaft drives the slide plate to move up and down repeatedly, thereby moving the sliding shell so that the grinding block grinds the end face of the spot welding needle, making the end face smooth. This reduces the probability of sparks during spot welding and enhances production safety.

[0028] 3. This invention uses a fan to provide suction to the air intake, which draws away the fumes and sparks generated during spot welding. The fumes and sparks are then drawn into a water tank through a flexible hose and purified by the water in the tank. Harmful substances are intercepted and then released into the air, effectively preventing fumes from polluting the production environment. Attached Figure Description

[0029] Figure 1 This is a perspective view of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a three-dimensional top view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle; Figure 5 This is a cross-sectional view of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle; Figure 7 This is a partial exploded view of the grinding mechanism of the present invention; Figure 8 This is a cross-sectional view of the purification mechanism of the present invention.

[0030] The components include: 1. Workbench; 2. Feeding mechanism; 3. Rotating mechanism; 4. Adsorption feeding mechanism; 5. Feeding spot welding mechanism; 6. Unloading conveyor belt; 7. Grinding mechanism; 8. Purification mechanism; 201. Feeding conveyor belt; 202. Hopper; 203. Unloading wheel; 204. First cylinder; 301. Second cylinder; 302. Magnetic rotary table; 303. Material tray; 401. Screw motor slide rail; 402. Moving plate; 403. Fixed plate; 404. Third cylinder; 405. Suction trough; 501. Nickel strip reel; 502. Spot welding station; 503. Support plate; 504. First guide plate; 505. Second... Guide plate; 506, fourth cylinder; 507, pressure roller; 508, feeding roller; 509, fifth cylinder; 510, slider; 511, adjusting block; 512, blade; 513, sixth cylinder; 514, spot welding generator; 515, support frame; 516, spot welding needle; 701, mounting base; 702, servo motor; 703, turntable; 704, eccentric shaft; 705, sliding plate; 706, sliding rod; 707, sliding shell; 708, grinding block; 801, sealing box; 802, fan; 803, water tank; 804, limit rod; 805, hose; 806, branch pipe; 807, air intake. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 The present invention will be further described in detail below.

[0032] This invention provides an automatic spot welding machine for batteries, comprising a worktable 1, a feeding mechanism 2 mounted on the top of the worktable 1, a rotating mechanism 3 mounted on the top of the worktable 1 directly in front of the feeding mechanism 2, an adsorption feeding mechanism 4 mounted on the top of the worktable 1, a feeding spot welding mechanism 5 mounted on the top of the worktable 1, a grinding mechanism 7 mounted in the middle of the feeding spot welding mechanism 5, a discharge conveyor belt 6 mounted on the top of the worktable 1 and installed at the output end of the feeding spot welding mechanism 5, and a purification mechanism 8 installed inside the worktable 1 for purifying the fumes generated during spot welding. The system includes a gas extraction mechanism and a spark extraction mechanism. The worktable 1 supports the entire device and facilitates battery processing. The feeding mechanism 2 automatically feeds batteries without manual intervention. The rotating mechanism 3 flips and sorts the battery terminals. The adsorption feeding mechanism 4 transports the sorted batteries to the feeding spot welding mechanism 5. The feeding spot welding mechanism 5 spots welds the nickel strip to the battery terminals and automatically cuts the nickel strip. The grinding mechanism 7 grinds the end face of the spot welding needle 516 to prevent sparks from being generated during spot welding due to unevenness. The purification mechanism 8 purifies the fumes and removes sparks to prevent pollution of the production environment. The rotating mechanism 3 includes a second cylinder 301, a second drive motor, and a material tray 303. The second cylinder 301 is fixedly connected to the top of the workbench 1, and the second drive motor is fixedly connected inside the workbench 1. A magnetic rotating platform 302 is fixedly connected to the output end of the second drive motor. The material tray 303 is fixedly connected to the top of the workbench 1. The second cylinder 301 and the material tray 303 are respectively installed on the left and right sides of the magnetic rotating platform 302. The second cylinder 301 is used to push the batteries on the magnetic rotating platform 302 into the material tray 303 for sorting. The magnetic rotating platform 302 is driven to rotate by the second drive motor. At the same time, the magnetic rotating platform 302 itself is magnetic and can attract the batteries, thereby causing the batteries to flip. The material tray 303 is used to sort the batteries for easy conveying by the adsorption and feeding mechanism 4.

[0033] The feeding mechanism 2 includes a feeding conveyor belt 201 and a hopper 202. The feeding conveyor belt 201 is fixedly connected to the top of the workbench 1. A first cylinder 204 is installed on the rear side of the feeding conveyor belt 201. The hopper 202 is fixedly connected to the top of the workbench 1. A first drive motor is installed on the lower side of the hopper 202. A discharge wheel 203 is fixedly connected to the output end of the first drive motor. The discharge wheel 203 is installed directly above the feeding conveyor belt 201. The first cylinder 204 is installed directly behind the magnetic rotary table 302. The feeding conveyor belt 201 has a certain tilt angle so that the batteries can automatically roll towards the first cylinder 204. The hopper 202 is used to stack batteries. The discharge wheel 203 is driven by the first drive motor so that the groove can accommodate a battery until it rotates to the bottom and falls into the feeding conveyor belt 201, realizing automatic feeding. The first cylinder 204 is used to push the batteries in the feeding conveyor belt 201 into the magnetic rotary table 302 in sequence.

[0034] The adsorption feeding mechanism 4 includes a lead screw motor slide rail 401, which is fixedly connected to the top of the workbench 1. A movable plate 402 is installed on the front side of the lead screw motor slide rail 401, and a fixed plate 403 is installed on the front side of the movable plate 402. A third cylinder 404 is fixedly connected to the inner side of the fixed plate 403, and a suction trough 405 is fixedly connected to the output end of the third cylinder 404. The lead screw motor slide rail 401 is used to drive the movable plate 402 to move linearly left and right. The movable plate 402 is used to drive the fixed plate 403 to move synchronously. The fixed plate 403 is used to support the third cylinder 404. The third cylinder 404 is used to drive the suction trough 405 to move up and down, so that the suction trough 405 contacts the battery and can adsorb it. The suction trough 405 is used to adsorb the battery by negative pressure suction, thereby facilitating movement.

[0035] The feeding spot welding mechanism 5 includes two nickel strip reels 501, a spot welding station 502, and two support plates 503. The bottom of the nickel strip reels 501 is rotatably connected to the top of the workbench 1, the bottom of the spot welding station 502 is fixedly connected to the top of the workbench 1, and the bottom of the support plates 503 is fixedly connected to the top of the workbench 1. The two support plates 503 are respectively installed on the front and rear sides of the spot welding station 502. A first guide plate 504 is fixedly connected to the top of the support plate 503, a second guide plate 505 is fixedly connected to the top of the support plate 503, and a fourth cylinder 506 is fixedly connected to the top of the support plate 503. A pressure roller 507 is fixedly connected to the output end of the fourth cylinder 506. A third drive motor is installed at the bottom of the 03 unit. The output end of the third drive motor is fixedly connected to a feeding wheel 508. The pressure wheel 507 and the feeding wheel 508 are installed between the adjacent sides of the first guide plate 504 and the second guide plate 505. A cutting assembly is installed on the top of the support plate 503, and a spot welding assembly is installed on the top of the support plate 503. The nickel strip reel 501 is used to place the nickel strip. The support plate 503 is used to support other parts. The first guide plate 504 and the second guide plate 505 are used to guide the direction of movement of the nickel strip. The fourth cylinder 506 is used to push the pressure wheel 507 to move. The pressure wheel 507 is used to abut the nickel strip. The feeding wheel 508 is used to drive the nickel strip to move.

[0036] The cutting assembly includes a fifth cylinder 509, the bottom of which is fixedly connected to the top of the support plate 503. A slider 510 is fixedly connected to the output end of the fifth cylinder 509. An adjusting block 511 is fixedly connected to the right side of the slider 510. A blade 512 is fixedly connected inside the adjusting block 511. The fifth cylinder 509 is used to push the slider 510 to move, and the slider 510 is used to drive the adjusting block 511 to move synchronously. The adjusting block 511 is used to facilitate the installation and removal of the blade 512, which is used to cut the nickel strip.

[0037] The spot welding assembly includes a sixth cylinder 513, which is fixedly connected to the top of the support plate 503. A spot welding generator 514 is fixedly connected to the output end of the sixth cylinder 513. A support frame 515 is slidably connected to the right side of the spot welding generator 514. The bottom of the support frame 515 is fixedly connected to the top of the worktable 1. A spot welding needle 516 is fixedly connected inside the spot welding generator 514. The sixth cylinder 513 is used to push the spot welding generator 514 to move back and forth. The spot welding generator 514 is used to drive the spot welding needle 516 to move synchronously. The support frame 515 is used to limit the movement direction of the spot welding generator 514. The spot welding needle 516 is used to contact the nickel strip and spot weld the nickel strip to the pole of the battery.

[0038] The bottom of the slider 510 is slidably connected to the top of the support plate 503, and the bottom of the spot welding generator 514 is slidably connected to the top of the support plate 503. The support plate 503 supports the slider 510 and the spot welding generator 514 to keep them stable.

[0039] The grinding mechanism 7 includes a mounting base 701, the bottom of which is fixedly connected to the top of the worktable 1. A servo motor 702 is fixedly connected to the top of the mounting base 701. A turntable 703 is fixedly connected to the output end of the servo motor 702. An eccentric shaft 704 is fixedly connected to the right side of the turntable 703. A slide plate 705 is slidably connected to the outside of the eccentric shaft 704. Two slide rods 706 are slidably connected inside the slide plate 705. Two sliding shells 707 are fixedly connected to the top of the slide plate 705. The sliding shells 707 are slidably connected to the inside of the support plate 503. A grinding block 708 is interference-fitted inside the sliding shell 707. The grinding block 708 is slidably connected to the spot welding pin 51. 6. Externally, the mounting base 701 supports the servo motor 702, keeping it stable. The servo motor 702 drives the turntable 703 to rotate. The turntable 703 drives the eccentric shaft 704 to revolve around the axis of the servo motor 702. The eccentric shaft 704 moves the slide plate 705 up and down. The slide plate 705 drives the sliding housing 707 to move synchronously. The slide rod 706 limits the direction of movement of the slide plate 705. The sliding housing 707 drives the grinding block 708 to move synchronously. The grinding block 708 can be removed from the sliding housing 707 for easy replacement. The grinding block 708 is used to grind the spot welding needle 516.

[0040] One end of the slide rod 706 is fixedly connected to the top of the workbench 1, and the other end of the slide rod 706 is fixedly connected to the bottom of the spot welding station 502, so that the slide rod 706 remains stable.

[0041] The purification mechanism 8 includes a sealed box 801, which is externally and fixedly connected to the inside of the workbench 1. A fan 802 is fixedly connected to the right side of the sealed box 801. A water tank 803 is slidably connected inside the sealed box 801. A limit rod 804 is fixedly connected to the bottom wall of the inner wall of the sealed box 801. The right side of the water tank 803 is slidably connected to the left side of the limit rod 804. A flexible hose 805 is fixedly connected inside the sealed box 801. A branch pipe 806 is fixedly connected to the top of the flexible hose 805. The top of the branch pipe 806... The fixed connection has two air intakes 807. The sealing box 801 is used to connect and protect the internal parts. The fan 802 is used to provide suction to the air intakes 807. The water tank 803 is a container for storing water and is used to purify the flue gas. The limit rod 804 is used to limit the movement direction of the water tank 803 and keep the water tank 803 stable. The hose 805 is used to transport the flue gas. The branch pipe 806 is used to divide the suction into two parts. The air intakes 807 are used to suck away the flue gas and sparks generated when the spot welding needle 516 is working.

[0042] The lower side of the flexible hose 805 is fitted inside the water tank 803, and the fan 802 passes through the right side of the workbench 1, so that the flue gas can fully contact the water and the purified flue gas can be discharged.

[0043] The external branch pipe 806 penetrates the workbench 1 and the support plate 503, keeping the branch pipe 806 stable.

[0044] Working Principle: When processing batteries using this device, the batteries are first placed in the hopper 202 with their terminals aligned in the same direction. Then, the device starts operating. The first drive motor drives the unloading wheel 203 to rotate, sequentially conveying the batteries onto the loading conveyor belt 201 through the grooves on the unloading wheel 203. Due to the inclined angle of the loading conveyor belt 201, the batteries automatically roll to the front of the first cylinder 204. The first cylinder 204 then automatically pushes the batteries onto the magnetic rotating table 302. The magnetic rotating table 302 magnetically attracts the batteries and, in conjunction with the second drive motor, drives the battery... The magnetic rotary table 302 rotates 180 degrees, reversing the polarity. At this time, the second cylinder 301 extends, pushing the batteries on the magnetic rotary table 302 towards the material tray 303 for sorting. The next battery on the magnetic rotary table 302 will not rotate but will be directly pushed into the material tray 303. When the batteries on the material tray 303 accumulate to a specified number, the adsorption feeding mechanism 4 will work. The moving plate 402 will press along the lead screw motor slide rail 401 to the leftmost end of the lead screw motor slide rail 401, simultaneously moving the suction trough 405 to directly above the material tray 303 and activating the negative pressure system. Simultaneously, the third cylinder 404 pushes the suction trough 405 downward to contact the battery on the material tray 303 and adsorb it onto the suction trough 405. At this time, the suction trough 405 is lifted upward and moves to the middle of the lead screw motor slide rail 401, stopping directly above the feeding spot welding mechanism 5. Then, the feeding wheel 508 starts to rotate. Under the action of the fourth cylinder 506 pushing the pressure wheel 507 to press the nickel strip, the feeding wheel 508 drives the nickel strip to move along the direction of the first guide plate 504 and the second guide plate 505 until it reaches the battery pole. At this time, the sixth cylinder 513 will drive the spot welding generator 514 to start working, supporting... Under the limit of frame 515, spot welding needle 516 contacts nickel strip and spot welds to the battery terminals according to the set program. Then, fifth cylinder 509 pushes slider 510 to move, causing adjustment block 511 to drive blade 512 to start cutting nickel strip, cutting the nickel strip at the set position. Finally, suction trough 405 moves to the rightmost end of lead screw motor slide rail 401 and ends the negative pressure state of suction trough 405. At this time, the battery under suction trough 405 will fall onto unloading conveyor belt 6 and be transported to the next stage through unloading conveyor belt 6, realizing fully automatic production without manual intervention, saving time and labor, high efficiency, and consistent quality.

[0045] During the operation of the feeding spot welding mechanism 5, some fumes will be generated, which will pollute the working environment and produce some sparks. At this time, the control fan 802 will work to make the suction port 807 generate suction. The suction port 807 will suck away the fumes and sparks generated by the spot welding needle 516 and transport them to the water tank 803 along the branch pipe 806 and the hose 805. The fumes will come into contact with the water inside the water tank 803, absorbing the impurities inside the fumes, and then be discharged from the fan 802, thereby achieving purification and avoiding environmental pollution.

[0046] After a period of use, the end face of the spot welding needle 516 will become uneven due to prolonged use, and continued use will generate a large number of sparks. At this time, the servo motor 702 is controlled to rotate, which drives the eccentric shaft 704 to revolve. Under the limit of the slide rod 706, the slide plate 705 begins to move up and down in a straight line, and drives the slide shell 707 to move in a straight line in sync, so that the slide shell 707 extends from the support plate 503, allowing the grinding block 708 to contact the spot welding needle 516. At this time, grinding begins, and the end face of the spot welding needle 516 is ground flat. When using it, the probability of sparks will be effectively reduced, the safety during operation will be improved, and the operation will be convenient and labor-saving.

Claims

1. An automatic spot welding machine for batteries, comprising a worktable (1), characterized in that, The workbench (1) is equipped with a feeding mechanism (2) on top, a rotating mechanism (3) on top, the rotating mechanism (3) is installed in front of the feeding mechanism (2), an adsorption feeding mechanism (4) on top, a feeding spot welding mechanism (5) on top, a grinding mechanism (7) in the middle of the feeding spot welding mechanism (5), a discharge conveyor belt (6) on top, the discharge conveyor belt (6) is installed at the output end of the feeding spot welding mechanism (5), and a purification mechanism (8) is installed inside the workbench (1). The purification mechanism (8) is used to purify the fumes generated during spot welding and to remove the sparks that fly during spot welding. The rotating mechanism (3) includes a second cylinder (301), a second drive motor, and a material tray (303). The second cylinder (301) is fixedly connected to the top of the workbench (1), the second drive motor is fixedly connected inside the workbench (1), and a magnetic rotating table (302) is fixedly connected to the output end of the second drive motor. The material tray (303) is fixedly connected to the top of the workbench (1). The second cylinder (301) and the material tray (303) are respectively installed on the left and right sides of the magnetic rotating table (302).

2. The automatic spot welding machine for batteries according to claim 1, characterized in that, The feeding mechanism (2) includes a feeding conveyor belt (201) and a hopper (202). The feeding conveyor belt (201) is fixedly connected to the top of the workbench (1). A first cylinder (204) is installed on the rear side of the feeding conveyor belt (201). The hopper (202) is fixedly connected to the top of the workbench (1). A first drive motor is installed on the lower side of the hopper (202). A discharge wheel (203) is fixedly connected to the output end of the first drive motor. The discharge wheel (203) is installed directly above the feeding conveyor belt (201). The first cylinder (204) is installed directly behind the magnetic rotary table (302).

3. The automatic spot welding machine for batteries according to claim 1, characterized in that, The adsorption feeding mechanism (4) includes a screw motor slide rail (401), which is fixedly connected to the top of the workbench (1). A movable plate (402) is installed on the front side of the screw motor slide rail (401), and a fixed plate (403) is installed on the front side of the movable plate (402). A third cylinder (404) is fixedly connected to the inner side of the fixed plate (403), and a suction trough (405) is fixedly connected to the output end of the third cylinder (404).

4. The automatic spot welding machine for batteries according to claim 1, characterized in that, The feeding spot welding mechanism (5) includes two nickel strip reels (501), a spot welding station (502), and two support plates (503). The bottom of the nickel strip reels (501) is rotatably connected to the top of the workbench (1). The bottom of the spot welding station (502) is fixedly connected to the top of the workbench (1). The bottom of the support plates (503) is fixedly connected to the top of the workbench (1). The two support plates (503) are respectively installed on the front and rear sides of the spot welding station (502). A first guide plate (504) is fixedly connected to the top of the support plate (503). A second guide plate (504) is fixedly connected to the top of the support plate (503). The second guide plate (505) has a fourth cylinder (506) fixedly connected to the top of the support plate (503), and a pressure roller (507) fixedly connected to the output end of the fourth cylinder (506). A third drive motor is installed at the bottom of the support plate (503), and a feeding roller (508) is fixedly connected to the output end of the third drive motor. The pressure roller (507) and the feeding roller (508) are installed between the adjacent sides of the first guide plate (504) and the second guide plate (505). A cutting assembly is installed on the top of the support plate (503), and a spot welding assembly is installed on the top of the support plate (503).

5. An automatic spot welding machine for batteries according to claim 4, characterized in that, The cutting assembly includes a fifth cylinder (509), the bottom of which is fixedly connected to the top of the support plate (503). A slider (510) is fixedly connected to the output end of the fifth cylinder (509). An adjusting block (511) is fixedly connected to the right side of the slider (510). A blade (512) is fixedly connected inside the adjusting block (511).

6. An automatic spot welding machine for batteries according to claim 5, characterized in that, The spot welding assembly includes a sixth cylinder (513), which is fixedly connected to the top of the support plate (503). The output end of the sixth cylinder (513) is fixedly connected to a spot welding generator (514). A support frame (515) is slidably connected to the right side of the spot welding generator (514). The bottom of the support frame (515) is fixedly connected to the top of the workbench (1). A spot welding needle (516) is fixedly connected inside the spot welding generator (514).

7. An automatic spot welding machine for batteries according to claim 6, characterized in that, The bottom of the slider (510) is slidably connected to the top of the support plate (503), and the bottom of the spot welding generator (514) is slidably connected to the top of the support plate (503).

8. An automatic spot welding machine for batteries according to claim 6, characterized in that, The grinding mechanism (7) includes a mounting base (701), the bottom of which is fixedly connected to the top of the workbench (1), a servo motor (702) is fixedly connected to the top of the mounting base (701), a turntable (703) is fixedly connected to the output end of the servo motor (702), an eccentric shaft (704) is fixedly connected to the right side of the turntable (703), a slide plate (705) is slidably connected to the outside of the eccentric shaft (704), two slide rods (706) are slidably connected inside the slide plate (705), two sliding shells (707) are fixedly connected to the top of the slide plate (705), the sliding shells (707) are slidably connected to the inside of the support plate (503), a grinding block (708) is interference-fitted inside the sliding shells (707), and the grinding block (708) is slidably connected to the outside of the spot welding needle (516).

9. An automatic spot welding machine for batteries according to claim 8, characterized in that, One end of the slide rod (706) is fixedly connected to the top of the workbench (1), and the other end of the slide rod (706) is fixedly connected to the bottom of the spot welding station (502).

10. An automatic spot welding machine for batteries according to claim 4, characterized in that, The purification mechanism (8) includes a sealed box (801), which is fixedly connected to the outside of the workbench (1) and a fan (802) is fixedly connected to the right side of the sealed box (801). A water tank (803) is slidably connected inside the sealed box (801). A limit rod (804) is fixedly connected to the bottom wall of the sealed box (801). The right side of the water tank (803) is slidably connected to the left side of the limit rod (804). A hose (805) is fixedly connected inside the sealed box (801). A branch pipe (806) is fixedly connected to the top of the hose (805). Two air intakes (807) are fixedly connected to the top of the branch pipe (806). The lower side of the hose (805) is fitted inside the water tank (803), and the outside of the fan (802) penetrates through the right side of the workbench (1); The branch pipe (806) extends through the workbench (1) and the support plate (503).

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